I have an xml and it has nodes with i:nil="true" in it. What does that mean?
我有一个xml，里面有节点I:nil="true"这是什么意思?
For example:
例如:
<FirstName i:nil="true" />
Does that mean something different than:
这意味着什么不同于:
<FirstName />
If so, what is the difference?
如果是，那有什么区别呢?
4 个解决方案
#1
80
This means FirstName is null
这意味着FirstName为空
<FirstName i:nil="true" />
This means FirstName = ""
这意味着FirstName = "" "
<FirstName />
Assumption made on FirstName is of string type.
对FirstName的假设是字符串类型。
#2
9
Maybe i:nil actually means xsi:nil, this means that the FirstName element is empty, i.e. does not have any content -- not even "". It refers to the nillable property in XML Schema.
也许i:nil实际上是指xsi:nil，这意味着FirstName元素是空的，也就是说没有任何内容——甚至“”。它引用XML模式中的nillable属性。
#3
4
nil is an attribute, defined in the i namespace. For this FirstName node, the attribute has the value true.
nil是在i命名空间中定义的属性。对于这个FirstName节点，属性的值为true。
It's similar to this, just with different names and values:
与此相似，只是名字和价值观不同:
<form name="test">...
Here, form is the name of the node, similar to FirstName from your code, and name is an attribute with a value of "test", similar to your attribute nil with a value of "true".
在这里，form是节点的名称，类似于代码中的FirstName, name是一个值为“test”的属性，类似于属性nil值为“true”的属性nil。
What this means depends on the application reading the xml document.
这意味着什么取决于读取xml文档的应用程序。
If I were to venture a guess, I'd say that this looks like part of a xml document defining some kind of schema, and that the FirstName field can have a NULL or nil value, meaning empty, or unknown.
如果我猜一下，我会说这看起来像是定义某种模式的xml文档的一部分，FirstName字段可以有空值或nil值，意思是空值或未知值。
#4
-1
Probably your DTO and your model class is not match and DTO return name null because it cant map with some attribute in model class
可能DTO和模型类不匹配，DTO返回name null，因为它不能映射模型类中的某些属性
#1
80
This means FirstName is null
这意味着FirstName为空
<FirstName i:nil="true" />
This means FirstName = ""
这意味着FirstName = "" "
<FirstName />
Assumption made on FirstName is of string type.
对FirstName的假设是字符串类型。
#2
9
Maybe i:nil actually means xsi:nil, this means that the FirstName element is empty, i.e. does not have any content -- not even "". It refers to the nillable property in XML Schema.
也许i:nil实际上是指xsi:nil，这意味着FirstName元素是空的，也就是说没有任何内容——甚至“”。它引用XML模式中的nillable属性。
#3
4
nil is an attribute, defined in the i namespace. For this FirstName node, the attribute has the value true.
nil是在i命名空间中定义的属性。对于这个FirstName节点，属性的值为true。
It's similar to this, just with different names and values:
与此相似，只是名字和价值观不同:
<form name="test">...
Here, form is the name of the node, similar to FirstName from your code, and name is an attribute with a value of "test", similar to your attribute nil with a value of "true".
在这里，form是节点的名称，类似于代码中的FirstName, name是一个值为“test”的属性，类似于属性nil值为“true”的属性nil。
What this means depends on the application reading the xml document.
这意味着什么取决于读取xml文档的应用程序。
If I were to venture a guess, I'd say that this looks like part of a xml document defining some kind of schema, and that the FirstName field can have a NULL or nil value, meaning empty, or unknown.
如果我猜一下，我会说这看起来像是定义某种模式的xml文档的一部分，FirstName字段可以有空值或nil值，意思是空值或未知值。
#4
-1
Probably your DTO and your model class is not match and DTO return name null because it cant map with some attribute in model class
可能DTO和模型类不匹配，DTO返回name null，因为它不能映射模型类中的某些属性